No mixing. No scrubbing. Clean and restore your deck to its natural color and beauty. It quickly and easily cleans away exterior stains caused by mildew, mold, and algae from your wood deck, fencing and siding. It's guaranteed to work in just 10 minutes. There's no mixing or scrubbing. Just spray it on. Wait 5 - 10 minutes and rinse it off. Transforming weathered wood back to its natural look is that simple. It is biodegradable and environmentally friendly. It's ideal for use on painted and wood decks, painted wood fences and porches, composite finishes, wood siding, wood swing sets and more.